-- @testpoint: opengauss关键字mapping(非保留)，作为函数名,部分测试点合理报错

--关键字不带引号-成功
drop function if exists mapping;
create function mapping(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
--关键字带双引号-成功
drop function if exists "mapping";
create function "mapping"(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
--关键字带单引号-合理报错
drop function if exists 'mapping';
create function 'mapping'(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
--关键字带反引号-合理报错
drop function if exists `mapping`;
create function `mapping`(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
--清理环境
drop function if exists mapping(integer);
drop function if exists "mapping"(integer);